Support Linux kernel v5.4

To support rpi4 kernel based on Linux kernel v5.4, add wrapper for
changed function name.

With the Linux mainline commit 9285ec4c8b61 ("timekeeping: Use
proper clock specifier names in functions") in v5.3, function
ktime_get_boot_ns() is changed to ktime_get_boottime_ns().

Change-Id: I80e00592adea9e888daaef035f2332e5e7528eef
Ref: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9285ec4c8b61d4930a575081abeba2cd4f449a74
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>

diff --git a/kernel/proc-tsm.c b/kernel/proc-tsm.c
index a23ec38..e86ec82 100644 (file)
--- a/kernel/proc-tsm.c
+++ b/kernel/proc-tsm.c
@@ -21,6 +21,7 @@
 #include <linux/moduleparam.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/version.h>
 
 #include <linux/fs.h>
 #include <linux/proc_fs.h>
@@ -48,6 +49,13 @@ static int blacklist_c = 0;
 
 module_param_array(blacklist, charp, &blacklist_c, 0000);
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 3, 0)
+/* ktime_get_boot_ns() is renamed to ktime_get_boottime_ns() from v5.3 */
+static inline u64 ktime_get_boot_ns(void) {
+       return ktime_get_boottime_ns();
+}
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(5, 3, 0) */
+
 static u64 time_now(void)
 {
     return div64_ul(ktime_get_boot_ns(), NSEC_PER_USEC);